Exponential fit by customised equation
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Sushreesmita Mishra
on 1 Nov 2019
Commented: Sushreesmita Mishra
on 1 Nov 2019
When I am fiiting my experimental data clicking exponetial fit, then it fits well. But when I am writing the same equation in customised form its not fitting.
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Alex Sha
on 1 Nov 2019
Hi, Sushreesmita Mishra, the problem you met is normal. When chose build-in function for data fitting, since "build-in", so Matlab itself know which function user selected, then it can chose proper initial start-value acording to the type of function and the data, in the otherhand, for fitting function customised, Matlab doesn't know the type of the function, thus the initial start-values can not be given properly, it lead to the poor fit as your meeting. Same situation in other packages like OriginPro.
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